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Port 1389 (iclpv-dm)

IANA assigns port 1389 to iclpv-dm: Document Manager.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
iclpv-dm TCP Document Manager - -
iclpv-dm UDP Document Manager - -

Check what is listening on port 1389

Linux: is anything listening on TCP 1389?
sudo ss -tlnp 'sport = :1389'
Linux: UDP 1389
sudo ss -ulnp 'sport = :1389'
Linux / macOS: which process owns the port
sudo lsof -nP -i :1389
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':1389 '
Windows (Command Prompt)
netstat -ano | findstr :1389
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 1389 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 1389
From Windows
Test-NetConnection HOST -Port 1389
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 1389

Block port 1389 in the firewall

ufw
sudo ufw deny 1389/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 1389 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 1389 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 1389' -Direction Inbound -Protocol TCP -LocalPort 1389 -Action Block
ufw
sudo ufw deny 1389/udp
iptables
sudo iptables -A INPUT -p udp --dport 1389 -j DROP
nftables
sudo nft add rule inet filter input udp dport 1389 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 1389' -Direction Inbound -Protocol UDP -LocalPort 1389 -Action Block

Related ports

1387cadsi-lm1388objective-dbc1390iclpv-sc1391iclpv-sas

All port numbers · Open port checker
Assignment data: IANA port number registry (public domain), retrieved 2026-11-10.